Tie pinning machine and method



April 28, 1953 Filed` May 11, 1949 P. DE ANGUERA TIE PINNING MACHINE AND METHOD IN VEN TOR.

-P/zli de dem y f f' W April 28, 195.3 v P, DE ANGUERA 2,636,525

' TIE PINNING MACHINE AND METHOD Filed may 11, 1949 .5 sheets-sheet 2 N IN V EN TOR.

TIE PINNING MACHINE AND METHOD Filed May 11, 1949 5 Sheets-Sheet 3 .g /ao l ili- /32 INVENToR. 24 Paf/17, www

P.. DE ANGU'ERA TIE PiNNING MACHINE AN METHOD April 2s., 1953 i A5 Shets-Sheet 4 Filed may 1'1, 1949 v BY ' /Arr'vs April 28,1953 P. DE ANGUERA l 2,636,525

TIE PINNING MACHINE METHOD Filed nay 11, 1949 '5 Sheets-Sheet 5 /50 M0' INVENToR. P/zz'lzv girly1/era Patented Apr. 28, v 1953 UNITED STATES PATENT OFFICE TIE PINNIN G MACHINE AND METHOD Philip de Anguera, Cincinnati, Ohio Application May 11, 1949, Serial N o. 92,588

It is the principal object of this invention to provide an improved and efficient mechanism for producing pinned timbers in quantity. A typical timber which this improved mechanism is adapted to produce is a railroad tie having one or more spiral dowels forced entirely through the material of the tie adjacent each of its ends, and in positions substantially normal to the wood grain of the tie. Timbers with spiral dowels applied in this manner provide longer periods of service than nondoweled timbers, because the material of their ends is secured together by the dowels thus preventing the doweled timbers from developing splits and cracks which impair their usefulness and necessitate their replacement.

At present it is common practice to drive these spiral dowels into the ends of timbers with hammers or other impact tools before the timbers are placed in operative positions, or timbers may be doweled during placement in a particular structure after damaging cracks or splits have appeared therein. In either event, the work ofv driving dowels into the timbers has largely been performed by hand, which consumed considerable time, and as demand for doweledtimbers has increased it is the particular object of the present invention to provide a means and method for supplying this demand in an economic and eliicient manner.

In the present machine the timber is subjected to exceedingly high compressive forces while the dowels are driven into it and set in position whereby upon release of the pressure the dowels maintain the material of the wood in said compressed state until natural drying processes permit the dowels to assume normal conditions in the wood and thereafter preclude the development of cracks and splits therein.

A specific machine having an embodiment of the means set forth hereinbefore, and for the objects specied, is shown in the accompanying drawings and described in detail in the following specification, for illustration of the principles and characteristics of the invention, but without intent to limit the invention to such details.

In the drawings wherein like reference nu- 2 merals indicate similar parts throughout the several views:

Fig. 1 is a perspective View of the tie pinning machine.

Fig. 2 is a cross-section taken through the longitudinal center of the machine illustrated in Fig. l.

Fig. 3 is an enlarged section taken on line 3-3 of Fig. 2.

Fig. 4 is an enlarged cross-section taken onv Fig. 8 is a section taken on line 8--3 of Fig. 6.

Fig. 9 is a cross-sectional view showing a detail of the pin pusher bar yoke of the pin driving mechanism.

Fig. 10 is a diagrammatic view of the electrically controlled, hydraulic system for my machine, and

Fig. 11 is a sectional view illustrating the manner in which a plurality of my machines are Vused for simultaneously pinning both ends of av timber, some operating parts therefor being shown diagrammatically.

The tie pinning machine has an elongated and 5 relatively narrow base I5 comprising two transversely spaced I-beams I6 and I 'I which have riveted or bolted to their end portions a lateral spacer t8. The opposed end of the base has a frame mounted thereon comprising a vertical plate I9 which is rigidly secured in place upon the base by a channel shaped gusset 20 having a pair of spaced triangular side plates 2| and 22 welded to the rear surface of the plate I9 and to a cross plate 23 extending between andl mounted on the flange portions of the I-beams I6 and I'I. Intermediate the ends of the base there is positioned a plate 2li which is rigidly y and inexibly secured thereon by a pair of I-beams 25 and 26 which have their lower flanges bolted or otherwise fixed to the upper flanges of the I-beams I6 and I'I respectively. As illustrated in Figs. 1 and 2 the I-beams 25 and 26 of the frame are welded at their forward ends to the rear faces of the plate 24, whilst their rear ends are Welded to plate I9. Longitudinal. tie rods 21 and 28 extend between the upper ends of the plates I9 and 2li and cooperate with the I-beams 25 and 25 to form a rigid frame with the plates IS and 2li that is capable or" withstanding the high compressive forces developed therein by the machine during the clamping operation.

As clearly illustrated in Fig. l the machine has a centrally disposed tie clamping mechanism 29, a tie drilling device 35i at one end thereof, and a tie pinning mechanism 3i at its opposed end. These mechanisms are preferably automatically actuated lby an electrically controlled,l hydraulic system to successively receive and clamp the end or a railroad tie or other timber under a high compressing force, drill a plurality of holes through the compressed end of the ltimber and whilst it is under pressure drive spiral `dowe'ls into the predrilled holes.

Tie clamping mechanism The plate 24, which is rigidly mounted upon the base and reinforced by the frame Icomprising the I-beams 23 and 2li, the plate i9 and the tie rods 2l and 28, acts as the xed jaw member `for the tie clamping mechanism. Opposed to this plate is a movable jaw 32 supported in a vertical position for longitudinal reciprocating movement by a pair of spaced carrier wheels 33 and 34 which extend laterally from opposed lower sides of the jaw and have rolling engagement withV the intermediate portions of the upper flanges for the I--beams i6 and Il' respectively. The movable jaw member is preferably constructed from a iiat metal plate 35 reinforced along its vertical sides by heavy metal plates 35 and 31. The plate 35 has formed thereon rearwardly extending upper and lower studs 38 and 39 each provided with a threaded bore for receiving the threaded ends of longitudinal pull rods 4B and M respectively; said rods being locked in the studs by set nuts 42. The pull rod t! passes through longitudinally aligned bearing holes formed in the plates i9 and 2t whilst the upper rod do is positioned above the frame. Both of the rods are connected across their rear portions by a yoke 43 which is connected thereto in a manner similar to the rod connection with removable jaw member 32. As illustrated in Fig. 2,the threaded ends @Ll and l5 kof the pull rods d and ll pass through holes `formed in the yoke and are adjustably secured lto the yoke i3 by an opposed set oi lock nuts 4B. The yoke i3 may therefore be adjusted and secured in any suitable longitudinal position on the rods so that the machine may be adjusted to accommodate timbers of various thicknesses. The yoke is is provided with a `center bore Minto which is threaded the end of a piston rod 48 driven by a heavy duty hydraulic cylinder or motor 49, said cylinder being mounted in any suitable manner to the rear face of the plate I9. A piston di! for the rod i8 is adapted for longitudinally directed, reciprocating movement within the cylinder il!) when fluid under pressure is alternately -introduced into its ends. Upon introduction of fluid through a suitable port into the forward end of the cylinder, the .piston will move rearwardly thus forcing the yoke 43 rearwardly and moving the jaw 32 toward the xed jaw member 24. It is contemplated that the hydraulicv means for actuating thecylinder be adapted to exert -a predetermined pressure that will set up a compressive force of from 8 to 10 tons on a timber positioned between the xed jaw and movable jaw members, thus closing 'anycracks or splits that may be in the processed timber-and .holdingV said timber under for the carriage.

4 a material crushing force while it is being pinned.

Tie drilling device The tie drilling device 30 comprises a slide plate 200 mounted for longitudinal reciprocating movement upon I-bearrs i6 and Il. As illustrated in Figs. l, 2 and 3, each of the I-beams i6 and Il have a series of rollers 283i and 282 respectively mounted thereon, which have their upper ends exten-ding just 'above the yupper flanges of the respective I-'beams and which lare inrolling engagement at these points with the undersurface of the slide plate Zoll. Fixed to and depending from each side of the plate Zil are guide bars 293 `and Elm, which' cooperate with the series of rollers 231 and 282 respectively to provide accurately guided longitudinal movement for the slide plate. The plate is secured to the movable jawmember for movement therewith by a yoke 265 extending from the `central part of its forward end, and which is loosely pinned to a horizontal 'extension Zilli formed on the lower end of the said jaw member.

The tie drilling spindle carriage is mountedfor independent, longitudinal movement upon the plate ll by a pair of spaced square tracks 5 l-52 secured to the plate by longitudinally spaced brackets 53 and et. The tracks are adapted t0 support and guide the drill carriage for longitudinal movement toward and away from the end of the timber that isheld under compression by the jaw members at the tie clamping station '29. The drill carriage comprises four corner posts '55 interconnected around their top portions by a series of cross members 56, whilst the intermediate portions of the posts are secured together by cross members 5l. Opposed pairs of grooved wheels 58 are mounted to the lower ends of each of the cross members and each pair of wheels is adapted to have rolling engagement with the upper and lower surfaces of the tracks 5l and 52 so that the carriage will have smooth and accurate movement upon the plate 208. Drill spindle journals 59 and till are secured in guide blocks 6I each provided with opposed grooves for receiving and sliding along splines 62 formed on adjacent faces of the corner posts. The journals are vertically adjusted toward and away from each other by a vertical shaft'63 having oppositely directed threads cut in its upper and lower portions and which engage in internally threaded yokes 64 and S5 extending from the journals 59 and 60 respectively. The shaft 63 is` 'precluded from axial movement by a shoulder Gli formed on its upper end lwhich bears against an upper capA plate 61 The drill spindle journals are vertically adjusted by turning a hand wheel 68 secured to the upper end of the shaft 63. It will be noted that the oppositely threaded shaft not only adjusts the relative vertical positions of the drill spindle journals, but also supports the journals in their adjusted positions within the carriage.

As most clearly illustrated in Figs. 2 and 3 the drill spindles are rotated by pulleys B9 which are driven by an electric lmotor l@ mounted on a plate 'H which is pivoted at its upper' yend Yto the carriage. The motor has a V-belt drive l2 with the pulleys Sii; the belt tension being adjusted by a screw 13 threadedv in the lower end oi the plate 'H and bearing against the carriage. A suitable housing 'l is mounted on the carriage and protects the pulleys and belt drive arrangement therefor.

Feed and return vof the drill carriage is effected by an hydraulic cylinder or motor 15 mounted to,

and beneath the movable plate 200 and between the I-beams I6 and I1. The cylinder has a longitudinally movable piston 16 positioned therein which is connected to a piston rod 11. The outer end of the piston rod is secured to an arm18 depending from a plate 19 that is welded or otherwise fastened to the lower extremities of the corner posts 55 of the carriage.

It will therefore be noted that the drill spindle carriage 30 is moved in unison with the movable jaw member 31 of the clamping mechanism 29 because the spindle carriage and its motor are mounted upon the movable plate 200 in turn secured by yoke elements 205-206 to the said clamping jaw. The spindle carriage also has independent feed and return motion relative to the set jaw members all for the purposes to be set forth after the hydraulic system for the machine has been explained in detail.

Tic pinning mechanism The tie pinning mechanism 3| for the machine is designed to receive spiral dowels from a magazine and to simultaneously drive at least two of the dowels into prebored holes formed in the end of a timber, Whilst the timber end is held under compression by the clamping device 29. The mechanism is illustrated in `Figs. 4-7 in the drawings and comprises at least two pin guiding and receiving devices 80 and 8| mounted on the stationary jaw member or plate 20 for vertically directed, relative movement. The pin guiding and receiving devices 80 and 8| have somewhat simi.- lar structures and the same reference numerals will be employed for similar parts throughout the several views. Each device has a pin guide holder or base 82 provided with a centrally located open slot 83 (Fig. 7) for receiving a vertically positioned adjusting shaft 8f3 rotatably mounted in bearing plates 85 and 88 (Fig. 5) welded or otherwise fastened to the upper and lower ends respectively of a plate 81 that in turn is welded to the rear surface of the jaw member 24. The plate 81 is also supported by a gusset 88 that is welded to the outer surface of the plate and to the upper flange of the I-beam 26. The holders have routs milled therein for receiving nuts 89-90 which are oppositely threaded for cooperation with oppositely threaded portions 9|-92 respectively formed on the shaft 88. The shaft is rtated for adjusting the relative positions of the members by a hand wheel 93 xed on a shaft 94 which is journaled in the I-beam 26 and a bearing 95 depending from bearing plate 86.' The shaft has xed to its inner end a beveled gear 96 which meshes with a beveled gear 91 xed to the depending end 98 of the oppositely threaded shaft 94. The pin guides and receiving devices are also guided for vertical movement by a pair of keys 99 secured to the inner surface of the plate 81 and which freely engage in grooves |00 formed in the sides of the members.

Rigidly secured to the opposite endsA of the holders by screws or the like, are end plates |0| and |02 which have positioned between their front sides an upper pin guide bar |03 and a lower pin guide bar |0li. The rear sides of the end plates carry a pair of spaced cross bars |05 and |06 which have mounted between them horizontally reciprocating heads 01. The heads have slots |08 formed therein for receiving the mounting portions of pin pusher bars |09 which have their free ends slidable in slots ||0 formed between the adjacent faces of the bars |03 and |04.

"As most clearly illustrated in Fig. 7 the holders 82 have grooves formed in their inner faces in which are mounted pin guide blocks |2. `The blocks ||2 have pin receiving grooves ||3 formed.

therein which have the sectional form of a portion of a triangle; the mouths of said grooves being wide enough to admit'spiral dowels ||4 therento from the vertically disposed dowel raceways 5V provided between the pin'guide holders 82 and the pin guide bars |03| 04. The complementary sections for the pin guide grooves ||3 are formed on the dowel engaging portions 6 of the pin pusher bar |09.

The upper pin guiding and receiving device diiers from the lower device 8| in that its movable head |01 has secured thereto a slide plate H1 which has -a gate or slot ||6 formed therethrough at a point removed from its free end, whilst the member 8| differs from member 80 in that it has a pin stop bar ||9 positioned in the lower end of its raceway I5. The outer sides of the movable heads |01 are connected together by a yoke |20 which'h'as vertically extending slots 2| formed therethrough for permitting relative movement between the members 80 and 8| and for securing the members in adjusted position by set screws |22 which pass through the slots and are threaded in the movable heads |01.

With particular reference to Fig. 4 a spiral dowel magazine |23 is positioned upon the machine by legs `v|2i which are secured to the tie rods 21 and 28, said magazine having a slot |25 therein through which dowels pass in succession into a guideway |26 formed by oppositely disposed bars |21 and |28. The lower ends of the bars |21 and |28 are respectively secured in the pin guide holder 82 and the upper pin guide bar |03, and as most clearly illustrated in Fig. 7 the adjacent edges of said bars form a continuation of the raceway ||5 for the upper device 80. The lower device has a pair of stub bars |29 extending upwardly from its pin guide holder 82 and its pin guide bar |03 respectively, said stub bars being in alignment with the raceway ||5 in the upper device 80.

The pins or dowels in position within the raceways of the devices are moved laterally into their respective guides ||3 and said guides closed by complementary guide portions |6 of pin pusher bars |09 when said bars are moved from their full line positions shown in Fig. '1 to their dotted line positions illustrated in said view. In normal inoperative positions the pin pusher bars |09 are in retracted positions lbeyond the raceways so that pins are permitted to move down the raceways by gravity until the lowermost pin is supported by a stop. With respect to the upper device 80 the stack of pins is supported by the end of the slide plate |1 so that the lowermost pin'is below the path of the pin pusher bar |68 and maintains the next superjacent pin in position for lateral movement into the guide ||3 by said bar. During this particular operational phase of the upper device 80 a single pin is in the raceway for the lower device 8| and rests therein upon the stop bar H9. Upon completion of the pusher bar feed strokes the aligned pins have been laterally moved intol their respective guides and with reference to the upper device the said feed movement of the pusher bar provides lateral movement of the slide plate so that the gate ||8 comes into registry with the raceway ||5 thereby permitting the lowermost pin to fall into theraceway for the lower device and be held upon the pusher bar D therefor until the latters retraction *when lit, willkl assumeY exposition fupenthe; step 119 awaiting thjenext nin driving operation; During pin drivory said bar yand the slide the lowerinost pin will again restupon theinner endof the. slide hold. ing the.A second lowermost pinnin posit-ionv to be pushed laterally into its pin guide. by the pusher har and .the lowermost pin .in position to fall through. gate I Minto, theraceway for the lower devicel.

'Thepusher bars are. aetuatedhy; an hydraulic cylinder or motor 130 positioned on the frame and which has a. drive bar |31 secured .te lts-movable piston .132. The. bar is loosely mounted to the long arm of a hellferank-leyer fiapivoted. to the frame .and which has itsshortann pivotally seT our-ed to, a drive.` shatt'lll .boltedto a Ll-shapeel frame twelded or otherwise secured to the outersurfaceor the yolre v`I'Ti'll for the. rnoyaliile heads |91. In order .to preolude jamming` of the dowels in the magazine one inolined bottom. seo tionthereof .madefiforn a number of parallel, strips :I3-b. secured together by erossbars i31. and allor saidbars pivotedeentrallyon a.. Cross shaft lajeurnaled in the Vend Walls o the. magazine. The. outer end of Vthe pivoted bottom section is pivotally secured to the. upper end. .of the drive oar |31.

Bins positioned the Closed., trianeularly shaped guides in the devises 3o and Si are drivenL into the prehored holes'formed in the ties by means of -trianeularly shaped pin pusher bars 1.39 mounted for relative vertical adjustment in a yoke Ulli (Eis. Si) earried on the iree end of a piston rod 141... The piston .rod is driven by piston We whieh nasa longitudinal working stroke Within an .hydraulic .Cylinder or motor iid mounted at its rearend. tothe plete 1:8. As moet clearly illustrated-in Fie. 8 the plate 2li has a eene trally disposed elongated slot 14d formed therein for. .receiving snide plates |45, said plates having triangular apertures 14o formed therethrough Whoh. may be vertically adjusted for alignment with the triangular guides 113 in the devices 8i) and 81..

Machine cont-rol system and operation Fig. 1|) is a diagrammatic showing of an hydraulie` system for operating the machine illustrated in Figs. 1-9, and has associated therewith an eleotro control means for the hydraulic systeni. The numeral |41. indicates an hydraulic pump. aflld/ltlOdllCeS it '0.0 B4 4W9Y Valve 14.9 through a. pressure-line |59. The valve mais normally in position .t permit pressurefluid to pass through line 15| to the hydrauliemotor 4,9 to operate `the machine clamp and hold a tie end under tremendous pressure between stationary jaw 24 and movable jaw member e As the piston of the hydraulicmotor 49 is. moved into timber clampingposition by the introduction of pressure duid thereto by line 151., fluid is drained ,from the o pposed. end of the motor bank t0 the Sump tank' |48 through a line 16d, valve 149 and a drain line 259. When the uid inthe cylinder and line 151 reaches a predetermined pressure, a sequence valve 152 interposed in the line opens and permits pressure uid to be introduced into a i-Way valve 153 through pressure line 154. The value 153`isnormally in position to direct pressure fluid introduced therein to the drill carriage motor 15 through line 1'55 to drive the carriage through its drill feeding stroke. Fluid is driven fromthe motor 15 vdurinf-f; the carriage feed stroke through which .takes fluid from asump. tank 148 lll line 1511i', which; isconneotedito. theyalvel 53 and? which in turn. returns .said drain uid to.l the sump tank byline 15.1` When the drill carriage reaehes the. end of its. feed stroke, a limit switch 1511, mounted. on themaohine. base by a suitable bracket (Fis. l), is closed. by an extension on the carriage. to energize a solenoid actuated pilot value 159. which reverses the position of the 4. Way valve |53 wherebypressure fluid from line 15.41- is introduoed intothe line 15S through; a .se- Ciuenee valve 25.5 to the hydraulic .motor 15 to ret-urn the drill carriage to its inoperative posi.- tien. whereby. fluid is driven from the opposed end ofthe motor l5 by Way of line 155 and drain lin/e151.; When: the pressure has. been built up.

line 15o to a predetermined limit sequence valve 25S. opens and permits the. .introduction .of fluid from line. 1561120 the pin. driving bydraulio motor 14.3 by moans oi line 16.0 whereby the pins. are driven into the moindre@ holes made by the drills in the clamped timber. Fluid iS drained from the opposite end ofthe motor 143 during the feed stroke of the. pin. driving plunaers. by a. line 16.12. .which is directed by the position of the. 4e Way valve. |53 into. the sump tank by line 157|. When. the pin drinne motor 14S. reaches its. limit oi motion. a moi/ins part thereon operates liinit swat-ones 152 and iti. .Whioh siiniiltaneouslyk aotuate the solenoid pilot valves 2.84 .and 159 to. reverse their respective hiver Valves 14e and. |53 to respectively open the maehine. laws by ret in?l the clamp piston in motor 43 to itsinoperative position and condition the leur Way valve |53 for the suooeedins drilling operation.. The pinned tie may thereafter be removed from the machine, and. as the clamp motor d'9 reaches its inoperative position,l a moving part thereon closes a limit sWitoh |155, which may close down the machine Oras illustrated in Fig, 1|] it may close 2t circuit to a motor 166 for drivingthe tie feeding conveyor of the machine.

The pin feeding motor |36 is actuated to feed a pin into the pin guides H3 when fluid underpressure is introduced into. the tie clamping motor 19 through a line |61 connected to said motor and to the pressure line |51. Thepin feedingde.-

Working areas on its opposed sides. due to the.

piston rod connection to oneside thereof, which reduees the woikinsarea .ofthe piston on that side. presence oi the seniearnount of duid pressure on .both sides oi the piston through lines It? and led will therefore return the piston to. its said inoperative position fior the next operational eyole- With particular referenee to Fiss 1 and?, it will be understood that the limit stop 158 for the drill .is iiXed with respect to the stationary jaw member 24 and, .that .it functions to reverse the drill feed stroke just ,before the leading ends of the drills get-,through the railroad tie. The standard Width measurement Yfor railroad ties is not xed, but mayvary Within certain limits and the point of entry of the drill and its stroke dis.- tance willtherefore Vary. to some degree with eah tie clamped in the machine for pinning. To begin the feed stroke of the drilling mechanism at approximately the poi-nt oi entry into the tie the -drill carriage and its feed and return mechanism `are mounted on a plate 200 secured intandem to the movable jaw of the clamps whereby the leading ends of the drills are brought into close proximity to the work clamped by the jaw before the drill feed stroke is initiated.

The tie centering device As illustrated in Fig. l1, two of my tie pinning machines may be positioned side by side and operated in unison to clamp, drill and pin both ends of a tie simultaneously. The tie is fed between the jaws of the machines by a conveyor |69, which has a number of spaced arms Il thereon, which push the tie beyond the conveyor and into a position between the machines where it is supported by brackets IH in approximate position for pinning. A limit switch H2 is then actuated by an arm lli! to open a circuit toconveyor motor HSB to stop the conveyor, said limit switch also operating a pilot valve to a lc-way valve V13, which introduces iluid under pressure to an hydraulic motor VM. n

Hydraulic power for operating the centering device may be provided by opening the mainpressure line l5@ for one of the tie pinning machines and connecting the pump side to the 1 -way valve |13 as indicated in Fig. l1. This motor actuates a centrally pivoted lever H5, which operates two arms 11116 and ill disposed on opposite ends of the positioned tie through links H8 and |19 respectively. The arms center and equalize the positioned tie so that the dowels are driven into the tie at the same distance from each end even though the tie may be a bit under or over length.

The motor H4 is returned to inoperative position after the tie is centered by contact of a part of the lever V15 with a limit switch i8@ which actuates the pilot to reverse the li-way valve l 73. Upon return of the piston, pressure in the line 50, reaches a predetermined value, thereby opening a sequence valve IBI, whichdirects oil under pressure to the clamping device 49 in the usual manner.

What is claimed is:

l. In a machine of the character described, an elongated frame, a stationary jaw member mounted upon the frame intermediate the frame ends, a fixed plate mounted upon one end or the frame, longitudinal structural members connecting the stationary jaw member and the fixed plate, a movable jaw member disposed above the frame for reciprocating movement toward and away from the outer face of the stationary jaw member, longitudinal pull rods secured to the jaw member and at least one of said rods journaled for axial movement through the said xed plate and the stationary jaw member, a heavy duty fluid motor carried by the outer face of the fixed plate, a yoke connecting the ends of the pull rods and having an operative connection with said motor, at least two drilling devices mounted on the opposite end of the frame for operative movement through the movable jaw member to form holes through the timber compressed between the jaw members, a fluid motor for actuating the drilling means, at least two pin receiving and holding devices mounted adjacent the inner face of the stationary jaw member in longitudinal alignment with the drilling devices, longitudinal pin guides in the members, pin pusher rods mounted for reciprocatory movement within the guides, and a fluid motor carried by the inner face of the fixed plate and having an operative connection with the pin pusher rods and adapted upon actuation to drive pins from the guides into the pre-drilled holes that the fluid motor for actuating the drilling devices is fixed on the carriage, and that said carriage is coupled to the movable jaw member.

3. A machine `fortransversely doweling the ends of a tie or other timber comprising a clamp having opposed jaws for compressing the end of the tie, means for opening and 'closing the clamp, a drill operable through one jaw of the clamp for drilling a hole in the tie and in the direction in'which it is compressed and while it is undercompression and movable from a position clear ofthe jaw through which it operates to a position wherevit enters a recess in the opposed jaw, and means at the 'outer face of the opposed jaw member opposed to the drill and in axialV alignment therewith for driving a dowel into the hole which has been so drilled after the drill has Abeen withdrawn therefrom and while the'ti'e is still compressed.

4. A machine of the class described for doweling a piece of timber transversely of its length which comprises a pair of clamping jaws one of which is movable toward and away from the other, means for operating said jaws for clamping and releasing the portion of the timber to be doweled, means operable through one jaw of the clamp for drilling a hole through the clamped portion of the timber, and aligned means operable through the other jaw for forcing the dowel into the hole so drilled while the timber remains clamped between the jaws.

5. A machine of the class described for doweling a piece of'timber transversely oi its length, which machine comprises a pair of clamping jaws one ofwhich is movable toward and away from the other, means for operating said jaws to clamp and lrelease the portion of the timber to be doweled, drill means adjacent one jaw and movable toward and away from it and having a drill that 'passes through an opening in the jaw for drilling a hole entirely through vthe clamped portion of timber, dowel feeding means associated with the other jaw kfor delivering dowels one at a time to a dowel driving position, and means associated with the said other jaw for engagingv a dowel in position to be driven and thrusting it through an opening in the jaw into the hole in the clamped portion of the timber which has been drilled by said drilling means.

6. A machine of theclass described for doweling the end of a piece of timber which comprises a pair of clamping jaws one of which is movable toward and away from the other, means including a uid motor for operating said movable jaw to clamp and release the portion of the timber to be doweled, means operable through one jaw for drilling a hole in the clamped portion of the timber engaged between the jaws, said drilling means being movable rectilinearly relative to the jaw through which it operates, means including a fluid cylinder for effecting a rectilinear movement of the drilling means, means aligned with the drilling means and operable through the other jaw for forcing a dowel into the hole which has been drilled in the clamped portion of the timber including a driver and a fluid motor for operating the driver, and a fluid system for controlling said motors to effect in a sequence the clamping of the jaws, the advance of the drilling means and the re- .tensiones trac-tion of the-drillingmeans: relatively to the jaw through which the drilling means operates, and then the operation .of the driver through yan .operating cycle -followed thy: the opening of .the clamping jaws.

'7. A machine ofthe class described for doweling a piece-.of timber with. transversely-.extendingdowelswhle' itis compressed-,- which. machine .comprises -a pair of clamping -j a-Ws one -of :which :is movable towardl andnaway from 1 thefvother,

means for operating said jaws to clamp andy release the portion -of the timber to bedoweled,

-a plurality of drills operable through one- Aiaiv for simultaneously drilling parallel holes through ysulojeoting the endof the tie to a transverse oressure of several tons, thereafter while the pressure is applied to the-end of the tie, drillinga hole from one side of the tie transversely therethrooghfin the direction of the applied pressure. driving a spiral. dowel intothe holeiso drilled' in. the tie from the oppositesdethereof' while the tie still remains underfpressure, and releasing the -pressure only. after the'drivingof the dowel has been completed.

9. In amachine of the character-described the combination of :a base,a stationary jawfmember on the base, a movable -jawmember onthe base, a drillcarriage, aslide` positioned upon thebase for rectilinear movementV thereon, means `:for attaching the slide to the movable :jaw-member,

means for. 'mounting the carriage ontheslide for rectilinear movement, a motor on theslide having its workingfelementf connected totheY drill carriage. to provide feed-and return strokes for the carriage,` a control means for the motor ipositioned on the base a xeddistanoeiromthestationary member, and actuating means. for .the control means iixe'd on.' the carriage in positonto Vcontact the control means when the drills on the carriage have reachedthe predetermined vdepth oi their feed strokes.

l0,- In a machine `ofA thecharacter described the. combination cfa base, a stationary-jaw mem- .leer Aon the ibase having a Work clamping. plate, Ya movable jaw member mounted onthe base, and

having a work clamping plate mounted .on `.part of the movablerja-W member for .rectilinearmovement toward and away from the plate, a motor mounted on the movable jaw member and having its Working elementin driving Iconnection with the drill carriage to provide feed and return strokes for the carriage, a motor control means positioned on the base a nxe'd distance from the 4stationary jaw member, and an actuating Amea-ns fixed lon the carriage in :position to contact the con-trol means when the-drill A'carriage has reached a predetermined position relative to the fixed jaw member.

11.. In a machine of' the class described the `cfnnliination with a jaw member of a pair 'of verticallv spaced pin guiding and receiving devices supported on the jaw member, vertically aligned pin racen-aye formed in the devices, and-each supporting a single stack of pins, -a lseparable pin ,guide in each deviceand .each `comprising ailxed longitudinal groove portion having a lateral opening into -a .raceivay a laterally recipro'oatedmember having a pair of pin pusher-S eac-hmovable through a raceway to vform with 'the respective iixed groove portion a closed pin guide, stop means beneath each raoeway for supporting a stack-of pins with a pin in the stack disposed opposite the opening .in a groove, means connecting `the stop for the uppermost pin stack with `the reciprocated member to move said stopout of the raceway when the member is effective to close the pin guide, said uppermost stop being located beneath the' groove opening in the rzmex'vayv a distance to position the lovfermost pin in the stack .below the said groove opening, a pin drivingbar reeip-rocable Within each closed groove, and means for operating the pin driving bars, when .the laterally reciprooated member has its pin pushers in operative positions closing the openings.

PHILIP DE ANGUERA.

Referencesonee m the c1@ of this patent UNITED sfrATEs PATENTS Number Name Date 551,581 Doman Dec. 17, 1895 1,141,886 Purdy et al June 1, 1915 1,454,751 Littlefield May 8, 1923 1,973,204 Goss et al Sept. 11, 1934 FOREGN; PATENTS Number Country Date :308,574 Germany. Junef'; 1922 622,640 France Mar. 7, 192'? 

